Why are hard drives useful?
If you have files that have been sitting on your computer for months (or years) but you still cannot get around to deleting, you might find an external hard drive very useful. Many of us are wary about removing old files from our computers, believing that they will come in handy someday. The problem here is that it tends to clog up the system and eat up resources. With an external hard drive, old files may be transferred and memory freed up to increase speed and improve perfomance of the computer.